1. Log in to your Webflow account and navigate to the project containing the data you want to export.

2. Go to the Collections page where your data is stored.

3. Click on the collection you want to export data from.

4. In the collection panel, look for an export button or similar option. If available, click on it to export the data.

5. Choose the CSV format for the export, as it is easily readable and can be imported to Google Sheets.

6. Download the CSV file to your local machine.

1. Open Google Sheets and create a new spreadsheet.

2. Give your spreadsheet a name that reflects the data you will be importing.

3. If you want to automate the import process, you can skip to Step 3. Otherwise, you can import the CSV file manually by clicking on File > Import > Upload and select the CSV file you exported from Webflow.

1. In your Google Sheets, click on Extensions > Apps Script.

2. Delete any code in the script editor and replace it with a custom script. You will write a script that fetches data from Webflow's API and writes it to your Google Sheet.

Here's an outline of what your script should do:

- Authenticate with Webflow's API: You'll need to get an API token from Webflow and include it in your script to authenticate your requests.

- Fetch data from Webflow: Use the Webflow API to fetch the data you want to import into Google Sheets.

- Parse the fetched data: Convert the data from the API response into a format that Google Sheets can understand (usually an array of arrays).

- Write data to Google Sheets: Use Google Apps Script methods to write the parsed data into your spreadsheet.

```javascript

function importDataFromWebflow() {

  var webflowApiToken = 'YOUR_WEBFLOW_API_TOKEN';

  var webflowCollectionId = 'YOUR_COLLECTION_ID';

  var headers = {

    "Authorization": "Bearer " + webflowApiToken,

    "accept-version": "1.0.0"

  };

  var apiUrl = "https://api.webflow.com/collections/" + webflowCollectionId + "/items";

  var options = {

    "method": "get",

    "headers": headers

  };

  var response = UrlFetchApp.fetch(apiUrl, options);

  var jsonResponse = JSON.parse(response.getContentText());

  // Assuming the items are in an 'items' array in the JSON response

  var items = jsonResponse.items;

  var sheet = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet();

  // Define the range where you want to write the data

  // This example assumes your data starts at row 2 to account for headers

  var range = sheet.getRange(2, 1, items.length, items[0].length);  

  // Write the data to the range

  range.setValues(items);

}

```

3. Replace `'YOUR_WEBFLOW_API_TOKEN'` with your actual Webflow API token and `'YOUR_COLLECTION_ID'` with the collection ID from which you want to import data.

4. Save the script with a meaningful name and then run it by clicking on the play button or by creating a trigger to run it at regular intervals.

1. In the Google Apps Script editor, click on the clock icon on the left to open the Triggers page.

2. Click on + Add Trigger at the bottom right corner.

3. Set up the trigger to run the `importDataFromWebflow` function at the interval you desire (e.g., daily, weekly).

1. Review your script and make sure that it is free of errors.

2. Test the script by running it manually at first to ensure it imports the data correctly.

3. Check your Google Sheet to see if the data has been imported as expected.

Important Considerations:

- Rate Limits: Be aware of Webflow's API rate limits to avoid getting temporarily blocked.

- API Changes: Keep an eye on any changes to the Webflow API that might require updates to your script.

- Error Handling: Implement error handling in your script to deal with issues like network errors or unexpected API changes.

- Security: Keep your Webflow API token secure and do not expose it in shared scripts or spreadsheets.

By following these steps, you should be able to move data from Webflow to Google Sheets without using third-party connectors or integrations. Remember that this method requires a fair amount of technical knowledge, including familiarity with Google Apps Script and Webflow's API.